Query Store

Query Store is a valuable tool for identifying and resolving performance issues in SQL Server. It can be used to track query performance over time, identify slow-running queries, and determine the root cause of performance problems.

Benefits of Using Query Store

There are many benefits to using Query Store, including:

• Improved performance: Query Store can help to improve performance by identifying slow-running queries and providing insights into the root cause of the problem. This information can then be used to optimize the query or the underlying database.
• Reduced downtime: Query Store can help to reduce downtime by identifying and resolving performance issues before they cause outages. This can help to ensure that your database is always available and performant.
• Improved security: Query Store can help to improve security by identifying and resolving performance issues that could be exploited by attackers. This can help to protect your data and your organization from security breaches.
• Easier troubleshooting: Query Store can make it easier to troubleshoot performance issues by providing detailed information about the execution of queries. This information can help you to quickly identify and resolve the root cause of the problem.

How Query Store Works

Query Store works by collecting data about the execution of queries. This data includes information such as the query text, the execution time, the wait time, and the resource usage. This data is stored in a special table in the database, and it can be queried to identify performance issues.

How to Use Query Store

To use Query Store, you first need to enable it on your database. Once Query Store is enabled, it will automatically collect data about the execution of queries. You can then query this data to identify performance issues.

There are a number of ways to query the data in Query Store. You can use the Query Store views, the Query Store stored procedures, or the Query Store API. The Query Store views provide information about the execution of queries, the Query Store stored procedures provide ways to manage Query Store, and the Query Store API provides a programmatic way to access Query Store data.

Online Courses on Query Store

There are many online courses available on Query Store. These courses can teach you how to use Query Store to identify and resolve performance issues in SQL Server. Some of the most popular online courses on Query Store include:

• Solving Real World Problems with SQL Server 2016 Query Store
• Using Query Store in Azure
• Effective Query Analysis with SQL Server Tools
• Identifying & Fixing Performance Issues Caused by Parameter Sniffing
• Analyzing SQL Server Query Plans

Conclusion

Query Store is a valuable tool for identifying and resolving performance issues in SQL Server. It can be used to track query performance over time, identify slow-running queries, and determine the root cause of performance problems. Online courses can be a great way to learn how to use Query Store and improve the performance of your SQL Server databases.